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[ALSA] hda: add sigmatel hp detect support 

HDA Codec driver
Adds support for detecting hp insertion/removal and enable/disable of
lineouts based on unsolicited events.

Signed-off-by: Matt <matt@embeddedalley.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Matt 2005-07-04 17:51:39 +02:00 committed by Jaroslav Kysela
parent 41e2fce431
commit 4e55096e27
2 changed files with 63 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
sound/pci/hda/hda_codec.h
View File

@ -262,6 +262,9 @@ enum {
#define AC_PINCTL_OUT_EN (1<<6)
#define AC_PINCTL_HP_EN (1<<7)
/* Unsolicited response - 8bit */
#define AC_USRSP_EN (1<<7)
/* configuration default - 32bit */
#define AC_DEFCFG_SEQUENCE (0xf<<0)
#define AC_DEFCFG_DEF_ASSOC (0xf<<4)

62
sound/pci/hda/patch_sigmatel.c
View File

@ -36,6 +36,10 @@
#undef STAC_TEST
#define NUM_CONTROL_ALLOC 32
#define STAC_HP_EVENT 0x37
#define STAC_UNSOL_ENABLE (AC_USRSP_EN | STAC_HP_EVENT)
struct sigmatel_spec {
snd_kcontrol_new_t *mixers[4];
unsigned int num_mixers;
@ -507,8 +511,6 @@ static int stac92xx_build_pcms(struct hda_codec *codec)
return 0;
}
#define NUM_CONTROL_ALLOC 32
enum {
STAC_CTL_WIDGET_VOL,
STAC_CTL_WIDGET_MUTE,
@ -617,10 +619,18 @@ static int stac92xx_auto_create_hp_ctls(struct hda_codec *codec, struct auto_pin
hda_nid_t pin = cfg->hp_pin;
hda_nid_t nid;
int i, err;
unsigned int wid_caps;
if (! pin)
return 0;
wid_caps = snd_hda_param_read(codec, pin, AC_PAR_AUDIO_WIDGET_CAP);
if (wid_caps & AC_WCAP_UNSOL_CAP)
/* Enable unsolicited responses on the HP widget */
snd_hda_codec_write(codec, pin, 0,
AC_VERB_SET_UNSOLICITED_ENABLE,
STAC_UNSOL_ENABLE);
nid = snd_hda_codec_read(codec, pin, 0, AC_VERB_GET_CONNECT_LIST, 0) & 0xff;
for (i = 0; i < cfg->line_outs; i++) {
if (! spec->multiout.dac_nids[i])
@ -828,6 +838,53 @@ static void stac92xx_free(struct hda_codec *codec)
kfree(spec);
}
static void stac92xx_set_pinctl(struct hda_codec *codec, hda_nid_t nid,
unsigned int flag)
{
unsigned int pin_ctl = snd_hda_codec_read(codec, nid,
0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0x00);
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pin_ctl | flag);
}
static void stac92xx_reset_pinctl(struct hda_codec *codec, hda_nid_t nid,
unsigned int flag)
{
unsigned int pin_ctl = snd_hda_codec_read(codec, nid,
0, AC_VERB_GET_PIN_WIDGET_CONTROL, 0x00);
snd_hda_codec_write(codec, nid, 0,
AC_VERB_SET_PIN_WIDGET_CONTROL,
pin_ctl & ~flag);
}
static void stac92xx_unsol_event(struct hda_codec *codec, unsigned int res)
{
struct sigmatel_spec *spec = codec->spec;
struct auto_pin_cfg *cfg = &spec->autocfg;
int i, presence;
if ((res >> 26) != STAC_HP_EVENT)
return;
presence = snd_hda_codec_read(codec, cfg->hp_pin, 0,
AC_VERB_GET_PIN_SENSE, 0x00) >> 31;
if (presence) {
/* disable lineouts, enable hp */
for (i = 0; i < cfg->line_outs; i++)
stac92xx_reset_pinctl(codec, cfg->line_out_pins[i],
AC_PINCTL_OUT_EN);
stac92xx_set_pinctl(codec, cfg->hp_pin, AC_PINCTL_OUT_EN);
} else {
/* enable lineouts, disable hp */
for (i = 0; i < cfg->line_outs; i++)
stac92xx_set_pinctl(codec, cfg->line_out_pins[i],
AC_PINCTL_OUT_EN);
stac92xx_reset_pinctl(codec, cfg->hp_pin, AC_PINCTL_OUT_EN);
}
}
#ifdef CONFIG_PM
static int stac92xx_resume(struct hda_codec *codec)
{
@ -851,6 +908,7 @@ static struct hda_codec_ops stac92xx_patch_ops = {
.build_pcms = stac92xx_build_pcms,
.init = stac92xx_init,
.free = stac92xx_free,
.unsol_event = stac92xx_unsol_event,
#ifdef CONFIG_PM
.resume = stac92xx_resume,
#endif